Statistical Analysis and Estimated Tennis Ratings to the 10,000th of a Point
Match History (2015) View Advanced Player Stats
Jason Jefferson (Brentwood, CA)
Male 		3.5 C
12/31/2023
Estimated Dynamic Rating 3.2935
6/14/2024
Projected Year End Rating ------
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3.5 Rating Meter
Rating Meter
3.0001 - 3.5000
Recent Match History Current Rating History
2015 Overall Season
League/Level Total
Matches		 Win Loss Tie WPct Total
Sets		 Win Loss WPct Total
Games		 Win Loss WPct Defaults
Adult 18+ 3.5 6 4 2 0 66.7 16 9 7 56.3 112 53 59 47.3 0
Adult 40+ 3.5 5 2 3 0 40.0 11 4 7 36.4 86 36 50 41.9 0
Combo 6.5 4 2 2 0 50.0 10 6 4 60.0 77 45 32 58.4 0
Combo 7.5 2 1 1 0 50.0 6 3 3 50.0 45 22 23 48.9 0
Mixed 18+ 7.0 2 1 1 0 50.0 4 2 2 50.0 38 18 20 47.4 0
Mixed 40+ 7.0 4 3 1 0 75.0 10 6 4 60.0 72 37 35 51.4 0
Total 23 13 10 0 56.5 57 30 27 52.6 430 211 219 49.1 0
Match Date League Team Court Partner Opponent(s) W/L Result Match Rating
10/24/2015 Combo
6.5		 DIAMOND HILLS CM6.5A
No California		 D3 Bob Wieland Ralph Sanzeri

Gary Fiammengo 		W 6-2
6-1		 ----- -----
10/11/2015 Combo
6.5		 DIAMOND HILLS CM6.5A
No California		 D3 Matt Pierce Carmelito Deguia

Arvin Franco 		L 3-6
6-2
1-0		 ----- -----
10/03/2015 Combo
7.5		 DIAMOND HILLS CM7.5A
No California		 D1 Clark Walmer Alex Aguilar

Dmytro Bazulin 		L 7-6
5-7
1-0		 ----- -----
09/27/2015 Combo
6.5		 DIAMOND HILLS CM6.5A
No California		 D2 Charlie Holt Allen Lescure

Al Sanli 		L 4-6
7-6
1-0		 ----- -----
09/26/2015 Combo
7.5		 DIAMOND HILLS CM7.5A
No California		 D3 John Westphal Kranthi Tappita

Christopher Ingrassia 		W 6-4
2-6
1-0		 ----- -----
09/20/2015 Combo
6.5		 DIAMOND HILLS CM6.5A
No California		 D1 Robin Wright-Broughton Michael Xie

Rick Silvani 		W 7-6
6-1		 ----- -----
08/27/2015 Mixed 18+
7.0		 DIAMOND HILLS 18MX7.0B
No California		 D1 Margaret Sandoval Debbie Cross

Shawn Fuson 		L 6-2
6-3		 ----- -----
07/05/2015 Mixed 18+
7.0		 DIAMOND HILLS 18MX7.0B
No California		 D3 Margaret Sandoval Melissa Heng Steele

Robert Holmes 		W 6-2
7-6		 ----- -----
06/13/2015 Adult 18+
3.5		 DIAMOND HILLS 18AM3.5B
No California		 D2 Neil Ertmer Tal Yahud

Ralph Sanzeri 		W 7-6
7-5		 ----- -----
06/06/2015 Adult 18+
3.5		 DIAMOND HILLS 18AM3.5B
No California		 D1 Michael Davies David Deluce

John Vocke 		W 6-1
3-6
1-0		 ----- -----
05/23/2015 Adult 18+
3.5		 DIAMOND HILLS 18AM3.5B
No California		 D1 Steve Grimm Rob Corder

Gregory Maroulas 		W 7-5
2-6
1-0		 ----- -----
04/21/2015 Adult 18+
3.5		 DIAMOND HILLS 18AM3.5B
No California		 S1 Muthu Kumaran Ramanathan L 6-4
6-0		 ----- -----
04/19/2015 Adult 18+
3.5		 DIAMOND HILLS 18AM3.5B
No California		 D3 Charlie Holt Pat Mccauley

Peter Shumaker 		L 2-6
6-0
1-0		 ----- -----
04/18/2015 Adult 18+
3.5		 DIAMOND HILLS 18AM3.5B
No California		 S2 Thomas Leserman W 2-6
6-3
1-0		 ----- -----
03/15/2015 Mixed 40+
7.0		 DIAMOND HILLS 40MX7.0C
No California		 D2 Margaret Sandoval Balvinder Mears

Jon Van Oosbree 		L 6-3
6-2		 ----- -----
03/07/2015 Mixed 40+
7.0		 DIAMOND HILLS 40MX7.0C
No California		 D2 Margaret Sandoval David Harberson

Jeanne Sommer 		W 6-1
3-6
1-0		 ----- -----
02/28/2015 Mixed 40+
7.0		 DIAMOND HILLS 40MX7.0C
No California		 D2 Julie Riley Mary Phalon

Mark Keeling 		W 6-4
6-4		 ----- -----
02/26/2015 Adult 40+
3.5		 DIAMOND HILLS 40AM3.5A
No California		 S1 William Detlefsen L 6-2
6-2		 ----- -----
02/21/2015 Adult 40+
3.5		 DIAMOND HILLS 40AM3.5A
No California		 S1 Rick Davis L 6-3
6-1		 ----- -----
02/12/2015 Adult 40+
3.5		 DIAMOND HILLS 40AM3.5A
No California		 S1 Richard Morgin W 4-6
6-4
1-0		 ----- -----
01/24/2015 Adult 40+
3.5		 DIAMOND HILLS 40AM3.5A
No California		 S1 Matthew Mccormick L 6-1
6-4		 ----- -----
01/17/2015 Mixed 40+
7.0		 DIAMOND HILLS 40MX7.0C
No California		 D3 Margaret Sandoval Teri Holt

Steve Grimm 		W 6-2
3-6
1-0		 ----- -----
01/11/2015 Adult 40+
3.5		 DIAMOND HILLS 40AM3.5A
No California		 S1 Ricky Sasner W 6-0
6-4		 ----- -----
10/24/2015 D3 Combo
6.5
DIAMOND HILLS CM6.5A
No California		 W WALNUT CREEK RC/WALNUT CREEK CM6.5A
No California
Bob Wieland 6-2
6-1		 Ralph Sanzeri
Gary Fiammengo
Match: ----- Rating: -----
10/11/2015 D3 Combo
6.5
DIAMOND HILLS CM6.5A
No California		 L WILLOW PASS PK CM6.5B
No California
Matt Pierce 3-6
6-2
1-0		 Carmelito Deguia
Arvin Franco
Match: ----- Rating: -----
10/03/2015 D1 Combo
7.5
DIAMOND HILLS CM7.5A
No California		 L CLUBSPORT VV CM7.5B
No California
Clark Walmer 7-6
5-7
1-0		 Alex Aguilar
Dmytro Bazulin
Match: ----- Rating: -----
09/27/2015 D2 Combo
6.5
DIAMOND HILLS CM6.5A
No California		 L MEADOW STC CM6.5A
No California
Charlie Holt 4-6
7-6
1-0		 Allen Lescure
Al Sanli
Match: ----- Rating: -----
09/26/2015 D3 Combo
7.5
DIAMOND HILLS CM7.5A
No California		 W WALNUT CREEK RC/WALNUT CREEK CM7.5B
No California
John Westphal 6-4
2-6
1-0		 Kranthi Tappita
Christopher Ingrassia
Match: ----- Rating: -----
09/20/2015 D1 Combo
6.5
DIAMOND HILLS CM6.5A
No California		 W LAFAYETTE TC CM6.5A
No California
Robin Wright-Broughton 7-6
6-1		 Michael Xie
Rick Silvani
Match: ----- Rating: -----
08/27/2015 D1 Mixed 18+
7.0
DIAMOND HILLS 18MX7.0B
No California		 L DIAMOND HILLS 18MX7.0C
No California
Margaret Sandoval 6-2
6-3		 Debbie Cross
Shawn Fuson
Match: ----- Rating: -----
07/05/2015 D3 Mixed 18+
7.0
DIAMOND HILLS 18MX7.0B
No California		 W WALNUT CREEK RC/WALNUT CREEK 18MX7.0B
No California
Margaret Sandoval 6-2
7-6		 Melissa Heng Steele
Robert Holmes
Match: ----- Rating: -----
06/13/2015 D2 Adult 18+
3.5
DIAMOND HILLS 18AM3.5B
No California		 W WALNUT CREEK RC/WALNUT CREEK 18AM3.5A
No California
Neil Ertmer () 7-6
7-5		 Tal Yahud
Ralph Sanzeri
Match: ----- Rating: -----
06/06/2015 D1 Adult 18+
3.5
DIAMOND HILLS 18AM3.5B
No California		 W RANCHO COLORADOS 18AM3.5A
No California
Michael Davies () 6-1
3-6
1-0		 David Deluce
John Vocke
Match: ----- Rating: -----
05/23/2015 D1 Adult 18+
3.5
DIAMOND HILLS 18AM3.5B
No California		 W WALNUT CREEK RC/WALNUT CREEK 18AM3.5B
No California
Steve Grimm () 7-5
2-6
1-0		 Rob Corder
Gregory Maroulas
Match: ----- Rating: -----
04/21/2015 S1 Adult 18+
3.5
DIAMOND HILLS 18AM3.5B
No California		 L WALNUT CREEK RC/WALNUT CREEK 18AM3.5A
No California
6-4
6-0		 Muthu Kumaran Ramanathan
Match: ----- Rating: -----
04/19/2015 D3 Adult 18+
3.5
DIAMOND HILLS 18AM3.5B
No California		 L RANCHO COLORADOS 18AM3.5A
No California
Charlie Holt () 2-6
6-0
1-0		 Pat Mccauley
Peter Shumaker
Match: ----- Rating: -----
04/18/2015 S2 Adult 18+
3.5
DIAMOND HILLS 18AM3.5B
No California		 W MORAGA CC 18AM3.5A
No California
2-6
6-3
1-0		 Thomas Leserman
Match: ----- Rating: -----
03/15/2015 D2 Mixed 40+
7.0
DIAMOND HILLS 40MX7.0C
No California		 L ST MARY 40MX7.0A
No California
Margaret Sandoval 6-3
6-2		 Balvinder Mears
Jon Van Oosbree
Match: ----- Rating: -----
03/07/2015 D2 Mixed 40+
7.0
DIAMOND HILLS 40MX7.0C
No California		 W LAFAYETTE TC 40MX7.0A
No California
Margaret Sandoval 6-1
3-6
1-0		 David Harberson
Jeanne Sommer
Match: ----- Rating: -----
02/28/2015 D2 Mixed 40+
7.0
DIAMOND HILLS 40MX7.0C
No California		 W CLUBSPORT VV 40MX7.0A
No California
Julie Riley 6-4
6-4		 Mary Phalon
Mark Keeling
Match: ----- Rating: -----
02/26/2015 S1 Adult 40+
3.5
DIAMOND HILLS 40AM3.5A
No California		 L DIAMOND HILLS 40AM3.5B
No California
6-2
6-2		 William Detlefsen
Match: ----- Rating: -----
02/21/2015 S1 Adult 40+
3.5
DIAMOND HILLS 40AM3.5A
No California		 L MORAGA CC 40AM3.5A
No California
6-3
6-1		 Rick Davis
Match: ----- Rating: -----
02/12/2015 S1 Adult 40+
3.5
DIAMOND HILLS 40AM3.5A
No California		 W WALNUT CREEK RC/WALNUT CREEK 40AM3.5A
No California
4-6
6-4
1-0		 Richard Morgin
Match: ----- Rating: -----
01/24/2015 S1 Adult 40+
3.5
DIAMOND HILLS 40AM3.5A
No California		 L MEADOW STC 40AM3.5A
No California
6-1
6-4		 Matthew Mccormick
Match: ----- Rating: -----
01/17/2015 D3 Mixed 40+
7.0
DIAMOND HILLS 40MX7.0C
No California		 W DIAMOND HILLS 40MX7.0B
No California
Margaret Sandoval 6-2
3-6
1-0		 Teri Holt
Steve Grimm
Match: ----- Rating: -----
01/11/2015 S1 Adult 40+
3.5
DIAMOND HILLS 40AM3.5A
No California		 W RANCHO COLORADOS 40AM3.5A
No California
6-0
6-4		 Ricky Sasner
Match: ----- Rating: -----
Glossary
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Rating Dynamic rating after completed match.
NC Match not yet calculated into rating.
S Self rated or unrated player involved in match so no match rating calculated for current player.
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